You should hear my Mapex Horizon 18" which almost sounds like an 808 if i play a long tone.

I had a Mapex Venus Voyager with an 18" kick fitted with an Evans Hydraulic.
It had a massive amount of punch. You could feel it in your chest. And the tone was fairly low, considering.

But when I went over to my 22", the difference in pitch was immediately apparent.
The 22" had a fair amount of punch because it was cut down really shallow, but still - not as much as that 18" - ha ha.